NCTI FINAL EXAM GUIDE FIELD TECH II
- III CONVENTIONAL 2023
What is one reason why broadband cable operators install fiber-optic cable in stages instead of changing the infrastructure all at once?
What is the difference between the fiber-to-the-node (FTTN) and fiber-to-the-curb (FTTC) topo...
NCTI FINAL EXAM GUIDE FIELD TECH II
- III CONVENTIONAL 2023
What is one reason why broadband cable operators install fiber-optic cable in stages
instead of changing the infrastructure all at once? - Changing the infrastructure all at
once would cause too many service disruptions.
What is the difference between the fiber-to-the-node (FTTN) and fiber-to-the-curb
(FTTC) topologies? - An FTTC is allowed a smaller number of RF amplifiers between
the optical fiber and the customer premises.
Which type of star topology used in a passive optical network (PON) places the PON
splitters into fiber access terminal (FAT) located deep in the network and closer to the
customer premises than the centralized split? - Distributed star.
Which element of a passive optical network (PON) uses a Bragg grating filter? - Optical
line terminal (OLT).
Which element of a passive optical network (PON) uses patch panels? - Optical
distribution network (ODN).
What is it about radio frequency over glass (RFoG) that made broadband cable
operators envision using it to make a seamless transition from the legacy hybrid
fiber/coax (HFC) architecture over to a gigabit-capable passive optical network (GPON)
or Ethernet passive optical network (EPON)? - RFoG can operate in parallel with GPON
or EPON, which eliminates the need for any downtime during the transition.
How are optical splitters used in the forward path? - In the forward path, optical splitters
are used as passive branching devices that divide an optical signal across multiple
output fibers.
Which of the following describes a fiber pigtail? - Fiber-optic cable with pre-
connectorized ends.
Heat shrink tubing is installed over the fusion-splice to strengthen and protect it. When
should the heat shrink be installed on the fiber? - Before stripping the plastic coating
from the fiber.
Which of these components is used in a passive optical network (PON)? - Optical
splitters
, Which of the following are statements of true axioms? - When A = C and B = C, then A
= B because both are equal to C, which supports the axiom: Quantities equal to the
same quantity are equal to each other.
Simplify and solve the equation: If E = IR then I = ? - E/R
The square of 7 = - 49
The square root of 81 = - 9
0.00004 = ______ x 10 to the power of ______. - 4, -5
(75 x 10 to the power of 3) + (25 x 10 to the power of 4) = - 32.5 x 10 to the power of 4
10 to the power of -3 has a metric prefix of ______. - Milli
(480 x 10 to the power of -5) divided by (60 x 10 to the power of -3) = - 8 x 10 to the
power of -2
(250 x 10 to the power of -6) - (7 x 10 to the power of -5) = - 180 x 10 to the power of -6
(75 × 103) + (25 × 104) = - 32.5 × 104
(-25) + (42) + (-62) + (20) = - -25
(17) x (-19) = - -323
(-17) - (-34) = - 17
-49/-7 = - 7
(20) / (-4) + (-2) x (-10) - (-2) x (7) = - 29
3 6/9 + 6 1/3 + 9 5/9 = - 19 5/9
4/7 x 9 4/11 = - 5 27/77
7 3/8 divided by 7 1/4 = - 1 1/58
8.13 X 0.123 = - 0.99999
0.5349 divided by 0.1420 = - 3.7669014
Which of the following is a method for controlling expectations - Identify the source of
emotional overload.
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